Nokia 4A0-102 Exam - Topic 4 Question 50 Discussion

Actual exam question for Nokia's 4A0-102 exam

Question #: 50
Topic #: 4

Click the exhibit.

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C. What action is taken by router B when it receives the update?

ARouter B propagates the BGP update to routers D and C

BRouter B propagates the BGP update to router D

CRouter B detects duplicates in its BGP database and discards the update.

DRouter B propagates the update to routers A, C and D

Show Suggested Answer

Suggested Answer: B

by Fabiola at Feb 13, 2024, 02:32 PM

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Fernanda

3 months ago

I agree with A, but I’m not sure about the duplicates part.

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Tawna

3 months ago

Wait, can router B really discard updates? That seems odd.

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Gabriele

3 months ago

Definitely option A, that's how BGP works!

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Crissy

4 months ago

I think it only sends it to router D, right?

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Sabra

4 months ago

Router B will propagate the update to routers D and C.

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Ronny

4 months ago

I’m leaning towards option D, but I’m confused about whether router B would send the update back to router A or not.

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Shaun

4 months ago

I feel like router B might discard the update if it already has that prefix in its BGP database, but I can't recall the exact rules for that.

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Meghan

4 months ago

I remember a similar practice question where a router had to decide whether to propagate an update or discard it. I think it was about detecting duplicates.

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Lynette

5 months ago

I think router B should propagate the update to routers D and C, but I'm not entirely sure if it would send it back to router A as well.

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Weldon

5 months ago

I'm confident I can solve this. The key is understanding that router B should not propagate the update back to the originating router, A, and should only send it to the other neighbors.

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Tegan

5 months ago

Okay, I think I've got this. When router A sends the BGP update, router B should propagate it to the other routers it's connected to, but not back to router A.

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Eveline

5 months ago

Hmm, I'm a bit unsure about this one. I'll need to review my BGP knowledge to make sure I understand how updates are handled and propagated between routers.

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Genevive

5 months ago

This looks like a standard BGP update propagation question. I'll need to carefully consider the network topology and BGP behavior to determine the correct action taken by router B.

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Alison

5 months ago

This seems like a classic Monte Carlo simulation problem. I'll need to model the probability distributions for each task and run multiple iterations to get the overall project duration.

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